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        <div class="answer-content">挺好的，有共同话题，你听谁说程序员是吃青春饭的？</div>
        <div class="answer-content-all rich-text aimgPreview"><p>挺好的，有共同话题，你听谁说程序员是吃青春饭的？<br /></p></div>
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        <div class="answer-content">送外卖吧！我有个朋友前不久转行送外卖，看到漂亮的女人就记下她的联系方式（外卖手里有的），休息时候，发短信过去，问她约不约！已经成功了3个左右了吧！</div>
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        <div class="answer-content">原因太多了，常见的异常不做处理的话都会导致闪退。比如，类型转换异常，数组越界，未找到类，未在清单文件中注册Activity，oom 。。。。。。</div>
        <div class="answer-content-all rich-text aimgPreview"><p>原因太多了，常见的异常不做处理的话都会导致闪退。</p><p>比如，类型转换异常，数组越界，未找到类，未在清单文件中注册Activity，oom 。。。。。。</p></div>
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        <div class="answer-content">首先啊，不管什么语言都需要前端，这个前端自然需求就大，横向纵向都大；毕竟某一个语言你只有在这个语言范围内使用，只有纵向；前端发展和后端发展是没办法和后者比的，你作为后端，自然也会前端，只是没那么专精，你的专精在后端，而后端随着时间发展只会比前端提升空间更大。你不能说你刚刚培训毕业就想和有工作经验的前端拿同样工资，所以不能只看一时的，你得横向比较。</div>
        <div class="answer-content-all rich-text aimgPreview"><p>首先啊，不管什么语言都需要前端，这个前端自然需求就大，横向纵向都大；毕竟某一个语言你只有在这个语言范围内使用，只有纵向；前端发展和后端发展是没办法和后者比的，你作为后端，自然也会前端，只是没那么专精，你的专精在后端，而后端随着时间发展只会比前端提升空间更大。你不能说你刚刚培训毕业就想和有工作经验的前端拿同样工资，所以不能只看一时的，你得横向比较。</p></div>
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&lt;html&gt;
&lt;head&gt;
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   &lt;title&gt;Title&lt;/title&gt;
&lt;/head&gt;
&lt;body&gt;
   &lt;div&gt;Div father
       &lt;br&gt;
       &lt;p&gt;click me&lt;/p&gt;
   &lt;/div&gt;
&lt;/body&gt;
&lt;script&gt;
var div=document.querySelector('div')
div.onclick=function (event) {
    if(event.target.tagName=="P"){
        alert(' i am p')
        event.stopPropagation()
    }
}
&lt;/script&gt;
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...">如何点击当前h1对象使p内容显示或者隐藏?</a>
        
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        <div class="answer-content"><...code...>其他部分不变，试试是不是你想要的效果。。<span class="see-more">[ 查看全部 ]</span></div>
        <div class="answer-content-all rich-text aimgPreview"><pre class="brush:js;toolbar:false">for (var j = 0; j &lt; h1s.length; j++) {
    h1s[j].index = j;
    h1s[j].onclick = function() {
        var index = this.index;
        
        ps[index].style.display = ps[index].style.display === 'block' ? 'none' : 'block';
        
        for (var k = 0; k &lt; ps.length; k++) {
            if (k === index) {
                continue;
            }
            ps[k].style.display = "none"
        }
    }
}</pre><p>其他部分不变，试试是不是你想要的效果。。<br /></p></div>
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                        <a href="/u/3532559/bbs" target="_blank">白平衡</a><span class="signature">回答：</span>
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        <div class="answer-content">如果不考虑是因为重名而属性会丢失，list允许有重复的对象。感觉查询删除就行，如果是map重写equals和hashCode方法。set应该也是如此类似下面Items是类似Student的类，是一个物品的类，做为key存储在map中，值是购买的数量。认为当ID和name相同时就是相同，重写过下面方法，当插入我们认为是相同的时就会覆盖插入，<...图片...><...图片...><span class="see-more">[ 查看全部 ]</span></div>
        <div class="answer-content-all rich-text aimgPreview"><p>如果不考虑是因为重名而属性会丢失，list允许有重复的对象。感觉查询删除就行，如果是map重写equals和hashCode方法。set应该也是如此</p><p>类似下面Items是类似Student的类，是一个物品的类，做为key存储在map中，值是购买的数量。认为当ID和name相同时就是相同，重写过下面方法，当插入我们认为是相同的时就会覆盖插入，<br /></p><p><img src="picture/591522b5000166e105000107.jpg" alt="http://img.mukewang.com/591522b5000166e105380115.jpg" /></p><p><img src="picture/591522b60001cc2a05000295.jpg" alt="http://img.mukewang.com/591522b60001cc2a07640450.jpg" /></p><p><br /></p></div>
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        <div class="answer-content">老师好，老师能讲讲Thiknphp5在性能上的提升大不大，具体有哪些提升？</div>
        <div class="answer-content-all rich-text aimgPreview"><p>老师好，老师能讲讲Thiknphp5在性能上的提升大不大，具体有哪些提升？</p></div>
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        <div class="answer-content">学了才知道   感觉p'hp框架的话  大多按照mvc思想设计   还是挺好学的</div>
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